Carcassonne is a tile-placement game in which the players draw and place a tile with a piece of southern French landscape on it. The tile might feature a city, a road, a cloister, grassland or some combination thereof, and it must be placed adjacent to tiles that have already been played, in such a way that cities are connected to cities, roads to roads, etcetera. 

Having placed a tile, the player can then decide to place one of his meeples on one of the areas on it: on the city as a knight, on the road as a robber, on a cloister as a monk, or on the grass as a farmer. When that area is complete, that meeple scores points for its owner.

Carcassonne

If I play a tile which completes an empty city, must I place a knight in it? Or am I allowed to place a farmer instead?

Related Rule(s)